vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-45868): Linux kernel (AWS) vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:N/A:P) | Mar 18, 2022 | Apr 10, 2023 | Mar 27, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
Mar 18, 2022
Added
Apr 10, 2023
Modified
Mar 27, 2026
Description
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
Solutions
ubuntu-upgrade-linux-image-4-4-0-1117-awsubuntu-upgrade-linux-image-4-4-0-1118-kvmubuntu-upgrade-linux-image-4-4-0-1155-awsubuntu-upgrade-linux-image-4-4-0-239-genericubuntu-upgrade-linux-image-4-4-0-239-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-lts-xenial
Rapid7 Labs
2026 Global Threat Landscape Report
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